Improvement in retorts for the manufacture of prussiate of potash



D. B. & A. D. COLES.

Making Chemicals. No. 50,907. Patented Nov. 14, 1865.

- lnventon 4 Witnesses:

UNITED STATES PATENT OFFICE.

D. B. (JOLES AND A. D. OOLES, OF NEWARK, NEW JERSEY.

IMPROVEMENT lN RETORTS FOR THE MANUFACTURE OF PRUSSIATE 0F POTASH.

Specification forming part of Letters Patent No. 50,907, dated November14, 1865.

To all whom it may concern.-

Be it known that we, D. B. (Jones and A. D. (Jones, of Newark, in thecounty of Essex and State of New Jersey, have invented a new and usefulImprovement in Retorts for Manufacturing Prussiate of Potash, &c. and wedo hereby declare that the following is a full, clear, and exactdescription thereof, which will enable those skilled in the art to makeand use the same, reference being had to the accompanying drawings,forming part of this specification, in which- Figure 1 represents alongitudinal central section of this invention. Fig. 2 is a transversevertical section of the same, the line 00 00, Fig. 1, indicating theplane of section.

Similar letters of reference indicate corresponding parts.

This invention relates to an improvement in that class of retorts whichare generally constructed of cast-iron or other suitable material,cylindrical, with gudgeons on which it can be rotated, and one of whichis bored out, so as to obtain an aperture for the purpose of introducingthe charge or removing the same when ready.

The invention consists in the arrangement of double V-shaped ribssecured to the inner circumference of the retort and extending from itsend toward the center in such a manner that by the action of said libsthe material contained in the retort is thrown toward the center andcaused to collect on a shovel which may be introduced through thetubular gudgeon of the retort, and thereby the operation of withdrawingthe charge is greatly facilitated, and all the particles which otherwisewould be liable to accumulate in the corners of the retort are readilyreached and removed. The retort is made in the form of a cylinder withrounded edges, so that all the parts of the same wear out even, and thematerial contained in the retort is heated uniformly throughout.

Arepresents a retort made of cast-iron or any other suitable material,in the form of a cylinder with rounded edges, whereby the strength ofthe retort is improved, and at the same time, by preserving thecylindrical form of the retort, all the parts thereof are exposed to auniform heat, and the wear of the retort is uniform throughout,preventing it from burning out one place while other places preservetheir full strength.

The retort revolves on gudgeons a a, which extend from its heads andhave their bearings in suitable journal-boxes. One or both of thesegudgeons are hollow, but the diameter of the gudgeon a is much largerthan that of the gudgeon a, and the hole through it is sufficientl ylarge to give convenient access to the interior of the retort. Throughthis opening the retort is charged and emptied, and the operation ofemptying or withdrawing the charge is effected by means of a shovel,which is inserted through said tubular gudgeon, and, when full,withdrawn through the same passage through which it had previously beenintroduced. By these means a large portion of the charge can beconveniently reached; but that portion thereof which accumulates in thecorner next to the opening leading from the gudgeon a to the interior ofthe retort cannot be reached. This difficulty is avoided by theapplication of two or more pairs of V-shaped ribs, 1), the bases ofwhich rest upon the inner surfaces or heads of the cylinder, whereastheir apexes point toward each other, and are connected by short ribs 0,running parallel with the axial line of said cylinder. By the action ofthe V-shaped ribs the material in the cylinder is thrown from thecorners toward the middle thereof, and if a shovel is introduced throughthe tubular gudgeon a, the material in the retort readily accumulatesthereon, and the operation of withdrawing the charge is considerablyfacilitated. Said ribs also serve to agitate the material in the retort,so that the same is uniformly heated throughout, and much time andexpense is saved, particularly in the manufacture of prussiate ofpotash, for which our retort is principally intended.

. We claim as new and desire to secure by Letters Patent-- 1. The doubleV-shaped ribs 0, arranged in the interior of the retort A, substantiallyin the manner and for the purpose described.

.2. The employment of a cylindrical retort with rounded corners andtubular gudgeons,

substantially as and for the purpose set forth.

D. B. OOLES. A. D. GOLES.

Witnesses:

WM. T. CHINGUS, JONATHAN T. HAND.

